Thermostat Kit – Fits Mercury/Mariner 70-125 HP 2-Stroke (Replaces 803061T1) 3.3-5 2-Stroke The best way to confirm

The best way to confirm fitment is to check the "Engine & Model Compatibility" table on this page and

Built for marine environments with standard cooling systems

Unbolt and carefully remove the lower unit from the outboard's driveshaft housing

Can the stickers be removed or repositioned after application

including Volvo Penta 3853850

Thermostat Kit – Fits Mercury/Mariner 70-125 HP 2-Stroke (Replaces 803061T1) 3.3-5 2-Stroke The best way to confirmProduct Details This Thermostat Kit Fits Mercury Mariner 70 125 HP 2 Stroke (Replaces 803061T1) provides a reliable, direct fit replacement for maintaining the cooling system on inline 3 & 4 cylinder outboards from 1987 and newer. Engineered to regulate engine temperature, this kit ensures your motor operates within its optimal temperature range, preventing both overheating and overcooling. This component is a direct interchange for Sierra 18 3569,